CN2795502Y - Fan with fluid dynamic pressure bearing - Google Patents
Fan with fluid dynamic pressure bearing Download PDFInfo
- Publication number
- CN2795502Y CN2795502Y CN 200520002367 CN200520002367U CN2795502Y CN 2795502 Y CN2795502 Y CN 2795502Y CN 200520002367 CN200520002367 CN 200520002367 CN 200520002367 U CN200520002367 U CN 200520002367U CN 2795502 Y CN2795502 Y CN 2795502Y
- Authority
- CN
- China
- Prior art keywords
- pressure bearing
- hydrodynamic pressure
- fan
- axle sleeve
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a fan with a fluid dynamic pressure bearing, which comprises a casing, a shaft sleeve, a fluid dynamic pressure bearing, a stator and a rotor, wherein the shaft sleeve is arranged on the bottom plate at the bottom of a containing chamber of the casing, the stator is sheathed on the outer side of the shaft sleeve, the fluid dynamic pressure bearing is assembled in the shaft sleeve, and comprises a bearing part and a center shaft which can be assembled in the bearing part in a rotating mode, the rotor provided with a plurality of blades is sheathed on the outer side of the stator, and the bottom of a wheel hub at the inner side of the rotor is fixedly connected with the upper end of the center shaft. Therefore, the center shaft utilizing the fluid dynamic pressure bearing rotates in the bearing part in a non-contact mode so that the utility model has the efficacy of low noise, smooth operation, etc., and the fluid dynamic pressure bearing can be easily fixed in the shaft sleeve by the fixing part of the upper end of the shaft sleeve and then is combined with the rotor by the center shaft so that the fan has simple assembly.
Description
Technical field
The utility model relates to a kind of fan, relates in particular to a kind ofly can further promote product quality and assembling has the fan of hydrodynamic pressure bearing easily.
Background technique
Fan is a kind of important component that is widely used in the ventilation and heat purposes; electronic product now the time avoids for making its running that temperature is too high to be influenced its task performance or burn; usually can install fan in this product to play the effect of cooling heat dissipation, in order to guarantee this electronic product normal operation.
Present known fan design, as No. the 92211973rd, Taiwan " radiation fan ", No. 92213163 " fan motor " and No. 92214439 patent designs that case discloses such as " cooling fan structure improvement ", by understanding in the disclosed fan design of aforementioned each patent case, existing fan mainly is installing ball bearing or an oil-impregnated bearing in a hollow casing base plate Upper shaft sleeve, in addition in axle sleeve outside installing stator, again rotor is sheathed on the stator outside, and the axle that makes rotor bottom is forced in the bearing of axle sleeve, and is buckled below bearing by a clasp and to pull in the axle underpart.When aforesaid fan used oil-impregnated bearing, its rotor axle must install oil ring additional to play the oily effect of guarantor with respect to this oil-impregnated bearing top, whereby, made excitatory can the rotation and the generation air-flow by excitatory driving rotor in stator energising back of this fan.
Though aforesaid fan can provide one can produce the assembly that air-flow is made for the heat radiation purposes, yet, the bearing that should have the fan use now is nothing more than ball bearing or oil-impregnated bearing, wherein ball bearing is because of there being the rotation friction of metal construction, and its abrasion are big, and noise is big, there are shortcomings such as weak point in working life, though can itself contained lubricant oil is provided and reduce abrasion and noise to axle as for oil-impregnated bearing, lubricant oil easily runs off under the fan long-term operation, and reduces aforesaid effect.
In addition, this fan is when assembling, the axle of rotor is forced run through bearing, below the relative bearing of axle hypomere, install clasp in addition, or installing oil ring on the axle above with respect to oil-impregnated bearing additional to play the oil effect of protecting, so that the composition member of fan integral body is on the high side, and number of assembling steps is comparatively loaded down with trivial details and time-consuming.
The model utility content
Technical problem underlying to be solved in the utility model is, overcomes the defective that existing fan exists, and a kind of fan with hydrodynamic pressure bearing is provided, and it can further promote product quality and assembling convenience.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of fan with hydrodynamic pressure bearing, comprise housing, axle sleeve, hydrodynamic pressure bearing, stator and rotor, the exhaust outlet that has putting chamber and connection putting chamber in this housing, this axle sleeve is located on the base plate of housing putting chamber bottom, this stator is sheathed on the axle sleeve outside, this hydrodynamic pressure bearing is mounted in the pilot hole of this axle sleeve, and the fixing part butt on axle sleeve is fixed on it, this hydrodynamic pressure bearing comprises that a bearing portion and rotatably is mounted on the axle in this bearing portion, this rotor with several flabellums is sheathed on the stator outside, and the affixed axle of the shaft-jointed hole of rotor hub inside bottom surface central authorities upper end.
Aforesaid fan with hydrodynamic pressure bearing, its Intermediate shaft sleeve is shaped on the base plate of described housing.
Aforesaid fan with hydrodynamic pressure bearing, wherein fixing part is a trip of being located at this axle sleeve upper end.
Aforesaid fan with hydrodynamic pressure bearing, the fixing part of its Intermediate shaft sleeve upper end have two radially corresponding trips.
Aforesaid fan with hydrodynamic pressure bearing extends an axle sleeve joint chair with fixed hole up on its middle shell base plate, this metal axle sleeve is fixed in this fixed hole with the underpart.
Aforesaid fan with hydrodynamic pressure bearing, wherein fixing part is a flanging of being located at the metal axle sleeve upper end.
Aforesaid fan with hydrodynamic pressure bearing, the exhaust outlet of its middle shell is located at the base plate periphery.
Aforesaid fan with hydrodynamic pressure bearing, wherein exhaust outlet is located at the housing side.
Aforesaid fan with hydrodynamic pressure bearing, the shaft-jointed hole stage casing of its rotor has the groove that is slightly larger than the axle external diameter, and last hypomere is corresponding to the aperture of axle.
The utility model is compared with existing fan has following advantage at least:
1, the utility model is to use the media of hydrodynamic pressure bearing as the rotor rotation, because of the axle of this hydrodynamic pressure bearing is untouchable rotation in bearing portion, the friction of no metallic material, have low noise, abrasion less, effect such as long service life, the grease that has vacuum impregnation simultaneously between the axle of this hydrodynamic pressure bearing and bearing portion inside, can in bearing portion, be untouchable rotation for axle, make it have splendid dynamic pressure effect, it is smooth and easy to turn round, make this fan product reliability height, and stay in grade.
2, the utility model is trip or the design of fold type fixing part that utilizes the axle sleeve upper end of being located in the housing, insert in the axle sleeve for hydrodynamic pressure bearing, fixed by this fixing part, and then the existing fan axle of solution needs fix with clasp, or use the members such as oil ring of protecting oily purposes, make the assembling of this fan have more convenience.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the exploded perspective schematic representation that the utlity model has fan first preferred embodiment of hydrodynamic pressure bearing.
Fig. 2 is the combination section of fan first preferred embodiment shown in Figure 1.
Fig. 3 is the plane decomposing schematic representation that the utlity model has fan second preferred embodiment of hydrodynamic pressure bearing.
Fig. 4 is the combination section of fan second preferred embodiment shown in Figure 3.
The number in the figure explanation:
10 housings, 11 base plates
12 axle sleeves, 121 pilot holes
13 fixing parts, 14 liquid dynamic bearings
141 axles, 142 bearing portions
15 exhaust outlets, 16 axle sleeve joint chairs
161 fixed holes
20 stators, 21 coil groups
22 axle sleeves, 221 fixing parts
222 pilot holes, 23 circuit boards
30 rotors, 31 shaft-jointed holes
311 grooves
32 wheel hubs, 33 magnet
Embodiment
As shown in Figure 1 and Figure 2, the utlity model has fan first preferred embodiment of hydrodynamic pressure bearing, comprise a housing 10, an axle sleeve 12, a fluid hydraulic bearing (Fluid DynamicBearing; FDB) 14, one stator 20 and a rotor 30.
Have putting chamber in this housing 10, this housing 10 can be provided with the exhaust outlet 15 that is connected with putting chamber at base plate 11 peripheries, or can set out the air port (not shown) at housing 10 sides.
This axle sleeve 12 is to be shaped on the base plate 11 of this housing 10, its central authorities have a pilot hole 121, the upper end is provided with the fixing part 13 of trip shape, the trip shape fixing part 13 of these axle sleeve 12 upper ends can be one or more, in the present embodiment, these axle sleeve 12 upper ends are that two radially corresponding trip shape fixing parts 13 are set.
This hydrodynamic pressure bearing 14 comprises a bearing portion 142 and rotatably is mounted on axle 141 in this bearing portion 142 that inner and 141 greases that are provided with vacuum impregnation of axle of this bearing portion make axle 141 can do untouchable revolution in bearing portion 142.Stretch out outside the bearing portion 142 on these axle 141 tops, and this hydrodynamic pressure bearing 14 is mounted on pilot hole 121 inside of this axle sleeve 12, and trip shape fixing part 13 is colluded to its location, upper end.
This stator 20 is sheathed on axle sleeve 12 outsides, includes the coil groups 21 on circuit board 23 and the electrical connection circuit board 23.
This rotor 30 comprises a hollow wheel hub, the magnet 33 that several pieces are located on the flabellum of these wheel hub 32 peripheries and are located at wheel hub 32 inner side faces, and these wheel hub 32 bottom surface central authorities are provided with shaft-jointed hole 31.The stage casing of this shaft-jointed hole 31 has the groove 311 of the axle of being slightly larger than 141 external diameters, last hypomere is corresponding to the design in axle 141 apertures, this rotor 30 is to be located in the housing 10 and with its wheel hub 32 to be sheathed on stator 20 outsides, be fixed in axle 141 upper ends of hydrodynamic pressure bearing 14 in addition with shaft-jointed hole 31, wherein big, as to go up corresponding axle 141 upper end portions, hypomere 312313 apertures design by these 311 apertures, shaft-jointed hole 31 stage casings, be forced in the shaft-jointed hole 31 affixed in order to axle, magnet 33 in the wheel hub 32 is corresponding with the coil groups 21 of stator 20, and keeps an air gap.Whereby, make the stator 20 energising backs of this fan excitatory, and utilize magnet 33 and the magnetic effect of repelling each other that stator 20 coil groups 21 produce in the rotor 30, make rotor 30 rotations, and then introduce air-flow from rotor 30 tops, and by exhaust outlet 15 air drafts of housing 10 bottoms (or side).
As shown in Figure 3, Figure 4, the utlity model has fan second preferred embodiment of hydrodynamic pressure bearing, is to comprise a housing 10, an axle sleeve 22, one fluid hydraulic bearings 14, a stator 20 and a rotor 30, wherein:
Have a putting chamber in this housing 10, and this housing 10 can be provided with the exhaust outlet 13 that is connected with putting chamber at base plate 11 peripheries, or can set out the air port (not shown), extend an axle sleeve joint chair 16 with fixed hole 161 on this base plate 11 up at housing 10 sides.
This axle sleeve 22 metallic material manufacturing, its central authorities have a pilot hole 222, and the upper end periphery is established a bent flanging state fixing part 221.
This hydrodynamic pressure bearing 14 comprises a bearing portion 142 and rotatably is mounted on axle 141 in this bearing portion 142, stretch out outside the bearing portion 142 on these axle 141 tops, this hydrodynamic pressure bearing 14 is mounted in the pilot hole 222 of this axle sleeve 22, and it is fixing to be compressed its upper end by the bending of the flanging state fixing part 221 of axle sleeve 22 upper ends.
This stator 20 is sheathed on axle sleeve 22 outsides, and it includes the coil groups 21 on circuit board 23 and the electrical connection circuit board 23.
This rotor 30 comprises a hollow wheel hub 32, the magnet 33 that several pieces are located on the flabellum of these wheel hub 32 peripheries and are located at wheel hub 32 inner side faces, these wheel hub 32 bottom surface central authorities are provided with shaft-jointed hole 31, the stage casing of this shaft-jointed hole 31 has the groove 311 of the axle of being slightly larger than 141 external diameters, last hypomere is corresponding to the aperture of axle 141, this rotor 30 is to be located in the housing 10 and with its wheel hub 33 to be sheathed on stator 20 outsides, be fixed in axle 141 upper ends of hydrodynamic pressure bearing 14 in addition with shaft-jointed hole 31, wherein the groove 311 by shaft-jointed hole 31 stage casings designs, stress in the time of can reducing with axle 141 combinations, and then avoid the damage of member, magnet 33 in the wheel hub 32 is corresponding with the coil groups 21 of stator 20, and keeps an air gap.
The utility model characteristics are: fan of the present utility model uses hydrodynamic pressure bearing as turning to The media of son rotation, because the axle of this hydrodynamic pressure bearing is untouchable rotation in bearing portion, The friction of no metal material, have low noise, abrasion less, the effect such as long service life, simultaneously should The grease that has vacuum impregnation between the axle of hydrodynamic pressure bearing and bearing portion inside can exist for axle Be untouchable rotation in the bearing portion, make it have splendid dynamic pressure effect, it is smooth and easy to turn round, and makes this Fan product reliability height, and stay in grade.
The utility model utilization is located at snap fit or the fold type fixed part of the axle sleeve upper end in the housing and is established Meter is inserted in the axle sleeve for hydrodynamic pressure bearing, fixed by this fixed part, and then cancellation is existing There is fan spindle to need to be fixed with clasp, or uses the members such as oil ring of protecting oily purposes, whereby, Can make the assembling of this fan have more convenience, and then provide one to have more wind handy, practical function Fan.
Claims (9)
1. the fan with hydrodynamic pressure bearing comprises housing, axle sleeve, hydrodynamic pressure bearing, stator and rotor; It is characterized in that, the exhaust outlet that has putting chamber and connection putting chamber in the described housing, this axle sleeve is located on the base plate of housing putting chamber bottom, this stator is sheathed on the axle sleeve outside, this hydrodynamic pressure bearing is mounted in the pilot hole of this axle sleeve, and the fixing part butt on axle sleeve is fixed on it, this hydrodynamic pressure bearing comprises that a bearing portion and rotatably is mounted on the axle in this bearing portion, this rotor with several flabellums is sheathed on the stator outside, and the affixed axle of the shaft-jointed hole of rotor hub inside bottom surface central authorities upper end.
2. the fan with hydrodynamic pressure bearing according to claim 1 is characterized in that described axle sleeve is shaped on the base plate of described housing.
3. the fan with hydrodynamic pressure bearing according to claim 2 is characterized in that described fixing part is a trip of being located at this axle sleeve upper end.
4. the fan with hydrodynamic pressure bearing according to claim 3 is characterized in that the fixing part of described axle sleeve upper end has two radially corresponding trips.
5. the fan with hydrodynamic pressure bearing according to claim 1 is characterized in that extending on the described housing base plate axle sleeve joint chair with fixed hole up, and this metal axle sleeve is fixed in this fixed hole with the underpart.
6. the fan with hydrodynamic pressure bearing according to claim 5 is characterized in that described fixing part is a flanging of being located at the metal axle sleeve upper end.
7. according to claim 1,2,3,4,5 or 6 described fans, it is characterized in that the exhaust outlet of described housing is located at the base plate periphery with hydrodynamic pressure bearing.
8. according to claim 1,2,3,4,5 or 6 described fans, it is characterized in that described exhaust outlet is located at the housing side with hydrodynamic pressure bearing.
9. according to claim 1,2,3,4,5 or 6 described fans with hydrodynamic pressure bearing, it is characterized in that the shaft-jointed hole stage casing of described rotor has the groove that is slightly larger than the axle external diameter, last hypomere is corresponding to the aperture of axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002367 CN2795502Y (en) | 2005-02-18 | 2005-02-18 | Fan with fluid dynamic pressure bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002367 CN2795502Y (en) | 2005-02-18 | 2005-02-18 | Fan with fluid dynamic pressure bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795502Y true CN2795502Y (en) | 2006-07-12 |
Family
ID=36813257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520002367 Expired - Fee Related CN2795502Y (en) | 2005-02-18 | 2005-02-18 | Fan with fluid dynamic pressure bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795502Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105745453A (en) * | 2014-03-24 | 2016-07-06 | 株式会社Ihi | Centrifugal compressor impeller |
| CN112196908A (en) * | 2020-10-13 | 2021-01-08 | 珠海格力电器股份有限公司 | Heat radiation structure of dynamic pressure bearing, dynamic pressure thrust bearing and air compressor |
-
2005
- 2005-02-18 CN CN 200520002367 patent/CN2795502Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105745453A (en) * | 2014-03-24 | 2016-07-06 | 株式会社Ihi | Centrifugal compressor impeller |
| CN105745453B (en) * | 2014-03-24 | 2018-04-06 | 株式会社 Ihi | Centrufugal compressor impeller |
| CN112196908A (en) * | 2020-10-13 | 2021-01-08 | 珠海格力电器股份有限公司 | Heat radiation structure of dynamic pressure bearing, dynamic pressure thrust bearing and air compressor |
| CN112196908B (en) * | 2020-10-13 | 2021-09-14 | 珠海格力电器股份有限公司 | Heat radiation structure of dynamic pressure bearing, dynamic pressure thrust bearing and air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060712 Termination date: 20130218 |